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1972 articles for “investigations” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Experimental Investigations of Mass Flow Rate on Regression Rate of Hybrid Rocket
Abstract: A number of practical hybrid propulsion systems developed for booster and upper stage application,at different Centers across the globe. The regression rate of hybrid fuel plays an important role ondevelopment of viable hybrid propulsion system. In the present investigation an effort has been madeto study the regression rate behavior of PVC-DBP((C 2 H 3 Cl) n )-DBP(C 16 H 22 O 4 ) hybrid fuel burning inthe stream of gaseous …
Published in Journal of Experimental & Applied Mechanics · Vol. 12, Issue 2, 2021 · pp. 31–51 Read article
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Investigating the Dynamics of Vortex Shedding in Bluff Body Flows
Abstract: In engineering applications, bluff body flows are commonplace. They are typified by the creation of vortices in the wake zone, a phenomena called vortex shedding. The current study uses a mix of computer simulations and experimental data to examine the dynamics of vortex shedding inbluff body flows. A range of bluff body designs were investigated, and the flow characteristics were analyzed using computational fluid dynamics (CFD) and high-resolution particle image …
Published in Journal of Experimental & Applied Mechanics · Vol. 14, Issue 3, 2023 · pp. 18–23 Read article
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Investigations on Mechanical Properties of Al 8011 Reinforced with Micro B4C/Red Mud by Stir Casting Method
Abstract: Aluminium metal matrix composites are emerging as the most versatile material for unique automotive, aviation, aerospace, defense, marine applications and other structural applications due to their excellent mixture of properties. In the present investigation, a hybrid composite of Al8011 aluminium alloy reinforced with B4C and red mud was fabricated by stir casting method. Red mud is one of the major waste material extracted from the bauxite ore of alumina during …
Published in Journal of Electronic Design Technology · Vol. 7, Issue 1, 2016 · pp. 32–38 Read article
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Investigation of Rock Dust Suitability as Improvement Material of Subgrade and Sub-base Laterite Material of Elerinjare, Kwara State, Nigeria, in Pavement Construction
Abstract: The current study involves the improvement of laterite soil by addition of granite dust. The laterite and dust used for the study were collected at Elerinjare town, Ilorin. The analyses were done in a laboratory. The tests are compaction test, specific gravity, California bearing ratio (CBR) (soaked and unsoaked), Atterberg's limit, Sieve analysis, and bulk density. In this investigation, an attempt was made to stabilize lateritic soil using quarry dust …
Published in Journal of Geotechnical Engineering · Vol. 10, Issue 2, 2023 · pp. 41–57 Read article
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A Qualitative Investigation about Awareness of Occupational Health and Safety among Sawmill Workers in the City of Temples, Jammu
Abstract: The lightning growth of industries has become the major cause of health issues. Sawmill workers are not an exemption from being sufferers of various occupational diseases. The aim of this study is to investigate the awareness of sawmill workers with regard to their occupational health and felt requirements and issues towards use of protective gears. A qualitative study was conducted among thirty-eight sawmill workers. Majority of the workers were engaged …
Published in Journal of Industrial Safety Engineering · Vol. 4, Issue 1, 2017 · pp. 1–4 Read article
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Comparative Computational Investigation of Aerofoil Performance with and without Vortex Generators
Abstract: AbstractAircraft with an efficient aerodynamic design is a major concern in current aerospace industries trends, but the flow separation has been playing a predominant role in the aircraft performance reduction and thereby affecting the aerodynamic efficiency. To overcome these problems, vortex generators (vortilon) are fixed on the upper surface of the wing. This paper focused on the aerodynamic performance analysis of available NACA-23012 aerofoil with and without Vortex Generators, for …
Published in Journal of Instrumentation Technology & Innovations · Vol. 8, Issue 2, 2018 · pp. 1–16 Read article
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A Review on an Investigation on the Effect of Immersed Medium in Friction Stir Welding of Aluminium Alloys (AA 6061-T6)
Abstract: Friction stir welding is solid state welding technology used for welding of low melting point metals such as Al, Mg and its alloys. FSW process can be controlled by different parameters like rotational speed, feed rate and welding medium. In this process, a cylindrical non-consumable tool, with a profiled probe (pin) rotating about its own axis is slowly plunged into the abutting edges of work pieces rigidly clamped to a …
Published in Journal of Materials & Metallurgical Engineering · Vol. 7, Issue 1, 2017 · pp. 9–16 Read article
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Investigation on Torque and Thrust Forces in Radial Drilling of Copper Alloys
Abstract: As a part of research over improvement of machining process; cutting forces, metal removal rate (MRR) and surface finish on mechanical elements has become quite significant in the operational and aesthetical point of view. To enhance accuracy and precision by adopting energy saving techniques, manufacturing firms are adopting automated systems in order to achieve manufacturing excellence. In the present work, the effect of various process parameters like spindle speed, feed, …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 2, 2016 · pp. 6–19 Read article
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An Investigation on Effect of Welding Current Mode on Weld Quality Characteristics of Microplasma Arc Welding of Inconel 625 Sheets
Abstract: Nickel alloys have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resistance, such as metal bellows used in expansion joints in aircraft, aerospace and petroleum industry. In case of single-pass welding of thinner sections of this alloy, pulsed current microplasma arc welding was found beneficial due to its advantages over the conventional continuous current process. The paper focuses on studying the effect of …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 2, 2013 · pp. 8–13 Read article
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Investigation of Local Weighting Materials as a Substitute To Barite In Drilling Mud Formulation
Abstract: Weighting materials are important components needed to increase the density of drilling mud in order to provide enough hydrostatic pressure to balance abnormalpore pressures. In Nigeria, millions of dollars are spent annually in importing barite to serve this purpose. However, there exists large reserves of weighting materials such as barite, hematite, dolomite, calcite, ilmenite in Nigeria hence the need to investigate the suitability of these materials as substitute for imported …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 1, 2020 · pp. 39–48 Read article
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Experimental Investigation on Machining of AISI 1045 Stainless Steel by using Cryogenic Cooling of Micro EDM Drilling Process
Abstract: In this experimental work, the cryogenic cooling of the Micro-EDM (µEDM) drilling process for improving the performance and quality of micro holes. The controllable parameters such as the current (Ip), pulse on time (Ton), Pulse off time (Toff) and gap voltage (Vg) were chosen for further investigation. The Taguchi L27 orthogonal array is preferred to achieve the best experimental runs. Case hardened AISI 1045 stainless steel is selected to perform …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 2, 2020 · pp. 21–37 Read article
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Investigation of Mahogany Wood Functional Parameters Effect on Procurement: The Concepts of Buckingham Pi Theorem
Abstract: Buckingham theorem a tool used to predict procurement deliverability of Mahogany wood with impact of weight and density was investigated in the study. Indeed, the research was able to demonstrate the effect of Mahogany wood, density and other contributing factors for evaluation of the tensile strength and the delivery time on the truck. The research was simulated using some functional parameters, which was inputted by the application of MATLAB computer …
Published in Journal of Materials & Metallurgical Engineering · Vol. 13, Issue 1, 2023 · pp. 40–47 Read article
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Experimental Investigation of Hematite Fines Reduction to Magnetite with Coal and Coke Fines
Abstract: In this current investigation, we aimed to comprehensively examine how various key processing parameters influence the reduction of hematite particles enveloped by coal and coke fines. This reduction process took place in an externally heated cylindrical steel container, which we will call the "work tube." This work tube had a diameter of 70 mm and a height of 300 mm and was situated within a pot furnace. For the experimentation, …
Published in Journal of Materials & Metallurgical Engineering · Vol. 13, Issue 2, 2023 · pp. 1–9 Read article
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Design and Investigation of Peltier Technology for Automobile Air-Conditioning Unit
Abstract: AbstractIn recent years, market of heating, ventilation and air-conditioning system (HVAC) has escalated a lot. These units provide cooling and conditioned atmosphere to automobiles, buildings, cold storage etc. HVAC units are very reliable and effective but they produce some adverse impact on environment. This paper proposes the use of solar energy with thermoelectric (Peltier) technology. In order to determine the efficiency of solar energy assisted thermoelectric module, it is necessary …
Published in Journal of Microelectronics and Solid State Devices · Vol. 6, Issue 3, 2019 · pp. 37–42 Read article
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Investigation of Pass Transistor Logic and CMOS Logic Configuration Based D-Multiplexers
Abstract: Pass Transistor Logic (PTL) arrangement depicts a few rationale families utilized in the plan of incorporated circuits. It lessens the include of transistors utilized making distinctive rationale entryways, by killing excess transistors. The pass transistor is driven by an intermittent clock flag and goes about as an entrance change to ON (1) or OFF (0), contingent upon the information flag. The utilization of pass transistor rationale has brought about noteworthy …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 2, 2022 · pp. 1–8 Read article
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Ab Initio Investigation on Half-Heusler Compounds CoVZ (Z = P, Bi, Sb, As): Understanding Structural, Electronic, Magnetic, and Elastic Behavior
Abstract: The structural, electrical, mechanical, and magnetic properties of Half-Heusler CoVZ (Z= P, Bi, Sb, and As) compounds have been studied using the ab initio method. Here, we use the full potential linearized augmented plane wave (FP-LAPW) method, which is implemented by WIEN2k. The compounds CoVZ (Z= P, Bi, Sb, and As) are near to the Fermi level as implemented in the WIEN2k algorithm, exhibiting 100% spin polarization with finite band …
Published in Journal of Microelectronics and Solid State Devices · Vol. 10, Issue 3, 2023 Read article
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Investigation of Jute Mat with Waste Fish Net by Varying Matrices in Hybrid Composites
Abstract: AbstractIn this study the low cost material of multi filament waste fish net and jute fibres were incorporated as the main reinforcing materials with epoxy resin and polyester resin as the matrix in order to increase the strength of the hybrid composites. The samples were fabricated using hand layup technique. The nylon fibre of waste fish net possesses high impact strength, elasticity property and highly resistant to abrasion of chemicals …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 27–34 Read article
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Investigation of Dielectric Properties of a Novel Hybrid Polymer Composite using Industrial and Bio-waste
Abstract: AbstractFly ash is an industrial waste which creates environmental problems. Coir dust is a byproduct of coir fiber production. Novel low-cost hybrid polymer composite using coir dust and fly ash particle reinforcement is prepared. Investigation of dielectric behavior of this hybrid polymer composite proves its efficacy as a high-value marketable product. Individual compacts of coir dust, fly ash, coir dust and fly ash are also prepared for comparison with the …
Published in Journal of Polymer & Composites · Vol. 1, Issue 1, 2013 · pp. 22–27 Read article
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Investigate the Physical and Mechanical Properties of Short Coconut, Short Bamboo Fibers and Short Glass Fiber Reinforced Phenol Formaldehyde Composites
Abstract: In the field of research, the composite materials become the dominant materials from last forty years. Because of eco-friendly nature and sustainability, the researchers are using natural fibers in polymer composites to obtain good thermal, acoustic insulating properties, excellent formability and weight-resistance compared to traditional building materials. In the present research work, seven different fiber reinforcement Phenol formaldehyde matrix polymer composite i.e., short coconut, short bamboo and short glass fiber …
Published in Journal of Polymer & Composites · Vol. 8, Issue 3, 2020 · pp. 53–61 Read article
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Microstructural Investigation on Strength of New Age Mortar Synthesis with Thermosetting Polymer, GGBS, Fly Ash and Quarry Dust
Abstract: AbstractThermo setting polymer mortars containing Resin, hardener, fly ash, Quarry dust and GGBS (Ground Granulated Blast furnace slag). Merging representation of bio phenol-A-Di-glycidyl ether-based polymer with fly ash, Quarry dust and GGBS results are presented here for this present study. An innovative process is used to prepare the specimen in mild condition with commercial thermo setting polymer-based resin and hardener, fly ash, GGBS, along with quarry-dust-based paste. Following this procedure, …
Published in Journal of Polymer & Composites · Vol. 11, Issue 1, 2023 · pp. 63–71 Read article